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The Mineral Requirements of Pigs

University of Wisconsin

Abstract

It has been established that the following 13 different minerals, or elements that are associated with minerals, are essential in animal nutrition: calcium, magnesium, sodium, potassium, phosphorus, sulphur, iron, copper, manganese, cobalt, zinc, iodine, chlorine. Most of these, and in many rations or systems of management all of these, are supplied in relative abundance in practical rations for growing pigs.

Salt. Sodium and chlorine enter into all of the vital processes of the body including respiration, heart action and blood circulation, digestion, assimilation, secretion and excretion. The very fact that of all body tissues blood is richest in sodium and chlorine suggests that a salt deficiency will cause grave physiological disturbances. Ample proof of such effects has been established in feeding experiments with pigs and other animals.

A salt deficiency is more apt to occur when pigs are fed grain rations that are balanced with mill feeds like soybean oil meal, linseed meal, or wheat middlings, than when they are balanced with animal by products like tankage, fish meal, or skimmilk.